Question

3(21-7)-6-21

Answer 1

[AI-generated answer — Bot GPT 3.5]

To simplify the expression, we can follow the order of operations (also known as PEMDAS):

1. Start by simplifying what is inside the parentheses: 21 - 7 = 14.

2. Now, we have: 3(14) - 6 - 21.

3. Next, we calculate the multiplication: 3 * 14 = 42.

4. Our expression becomes: 42 - 6 - 21.

5. Finally, we perform the remaining subtractions: 42 - 6 = 36, and 36 - 21 = 15.

Therefore, the result of 3(21-7)-6-21 is 15.